forked from OSchip/llvm-project
60 lines
2.8 KiB
LLVM
60 lines
2.8 KiB
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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; Uses InstCombine with DataLayout to propagate dereferenceable
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; attribute via gc.relocate: if the derived ptr is dereferenceable(N),
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; then the return attribute of gc.relocate is dereferenceable(N).
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declare zeroext i1 @return_i1()
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declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
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declare i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token, i32, i32)
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define i32 @explicit_nonnull(i32 addrspace(1)* nonnull %dparam) gc "statepoint-example" {
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; Checks that a nonnull pointer
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; CHECK-LABEL: @explicit_nonnull
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; CHECK: ret i32 1
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entry:
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%load = load i32, i32 addrspace(1)* %dparam
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%tok = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %dparam)
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%relocate = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 7, i32 7)
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%cmp = icmp eq i32 addrspace(1)* %relocate, null
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%ret_val = select i1 %cmp, i32 0, i32 1
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ret i32 %ret_val
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}
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define i32 @implicit_nonnull(i32 addrspace(1)* %dparam) gc "statepoint-example" {
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; Checks that a nonnull pointer
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; CHECK-LABEL: @implicit_nonnull
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; CHECK: ret i32 1
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entry:
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%cond = icmp eq i32 addrspace(1)* %dparam, null
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br i1 %cond, label %no_gc, label %gc
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gc:
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%load = load i32, i32 addrspace(1)* %dparam
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%tok = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %dparam)
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%relocate = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 7, i32 7)
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%cmp = icmp eq i32 addrspace(1)* %relocate, null
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%ret_val = select i1 %cmp, i32 0, i32 1
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ret i32 %ret_val
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no_gc:
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unreachable
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}
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; Make sure we don't crash when processing vectors
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define <2 x i8 addrspace(1)*> @vector(<2 x i8 addrspace(1)*> %obj) gc "statepoint-example" {
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entry:
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; CHECK-LABEL: @vector
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; CHECK: gc.statepoint
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; CHECK: gc.relocate
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%safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0, <2 x i8 addrspace(1)*> %obj)
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%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 7, i32 7) ; (%obj, %obj)
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ret <2 x i8 addrspace(1)*> %obj.relocated
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}
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declare void @do_safepoint()
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declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
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declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32)
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declare <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token, i32, i32)
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